Roller side bearing.



A. STUGKI.

ROLLER SIDE BEARING.

, APPLICATION FILED AUG.26,1909.

1,093,953. Patented A r.21,1914. I

WITNESSES ug/ 3 I 46304;

X ym MAQ A.STUOKL ROLLER SIDE BEARING. APPLICATION FILBD AUG. 26,1909.

11,093,953 7 Patented Apr. '21, 191 1 2 SHEETS-SHEET 2.

amv NTOR wjewa' comprise a housingor frame adapted for ,connection to the upper bolster and pro;

ARNOLD STUCKI', 0F PITTSBURGH, PENNSYLVANIA.

Specification of Letters Patent.

nonmm SIDE BEARING.

Patented Apr. 21, 1914.

Application filed August 26,1909;- Serial No. 514,877.

To all ag lwm it may concern):

Be it known that 1, Arizona STUGKI, a resident of Pittsburgh, in the county of Allegheny and btate of Pennsylvania, have invented a new and. useful Improvement in Roller Side Bearings of which the follow ing is a specification.

This invention relates to side bearings for railway cars.

In my Patent No. 930,901, August 10, 1909, is illustrated, described and claimed a side bearing which is'absolutely frictionless, which performs all the other necessary functions of side'bearings, and which is inexpensive both as to first cost and subsequent repair. v

The' essential features of that sidebearing vided with'a bearing surtacemn'd a roller in the frame arranged to roll on'said bearing surface and being free to travel horizontally,"the housingheing arranged to move vertically 'relative to the roller in order that the latter may remain in contact'witl the lower bolster or bearing during'allnormal clearances between the bolsters,t0gether with means arranged to move theroller horizontally with all the ehanges in the angular re lat-ion of the bolster and at a peripheral speed substantially eqnal to the lateral movement of the bearings contacting with said roller, suchmeans being shownas long gear T teeth on the housing arranged to engage view and impart-,2 horizontal section on-the' teeth projecting from the ends'ofthe roller. The side bearing which is the subject of this application is of the same general type and has the same general objects as that of the patent aforesaid.

tion is primarily to so construct side bearings as to eil'ectively limit theswinging or swiveling of the truck and enable the usual safety chains to be dispensed with.

Other features are changes in construction so asto strengthen the bearing, and particularly to provide for a considerablevertical movement. of the roller, with improved means for preventing the roller from dropping out of thchousing when thetruckis taken from underneath the car.

is a vertical-section through the bearintakenparallel with the longitudinal axis 0 the-bolster; Fig.-2 -is'1n part an inverted plan:

line 2- 2 Fig. 1; Fig. 3 is a vertical .transverse section taken centrally of the bearing; Fig. 4 is asidevieW of the bearings; Fig. is anend view thereofyandiliigl. 6 is a view/ similar to Fig. 1 showing a modification.

In the drawings, the sidebearing has been j shown as adapted to be applied to abody bolster of tapering form; lt can, however,

be applied to a bodybolster of eithertaper ing orstraight form The side bearing comprises a suitable frame-or jliousingl' adapted v folconnection to tl1e body bolster which is indicated generally at 2, saidhousing havng ts upper face" formed on an'incline to correspond to the tape nof thebolster. The

downwardly projecting insideaveb or wall 6,an outside web or wall/7 and with end walls 8 and 9resp'ectively projecting downwardly but not necessarily to the same extent as theside wallszor webs. This frame or housing is openat the bottom to permit,

housingis provided with inwardly and outwardly projecting flanges 3 and 4; respecthe 'roller 10- to reject through the same and'contact wit-ht e cooperating bearing 11;

The to of theihousing is so-lid and provided.

on its ower,-face with abearing surface12 on which the roller 10 travels.

In the, preferred form the housing" is provided at; both theinnerand outer sides with a downwardly projecting rackfoimed by" the long-teeth 13, while each end' of the roller is cored, out to leave the projecting teeth 15 which mesh with theteeth 13 onthe housing. The teeth 13 aresutliciently long to .compensatefor the up anddown movement The specific object of the present inven-,

of the roller and at, all times remain in mesh with the teeth 15 on the roller. The intermeshing gears of the rpller and rack servenot only tohold the roll v and prevent it from assuming a diagonal or askewposition, but alsoserve to move the roller with all angular movements of the bolster relation to'each other, and this'irrespective as to whether the bod bolster islifted off the roller or not. 0 viously, as long as the body bolster is tilted so as to rotated with allchanges of the angular relation of the bolster, but evenwhen the bod arrangement as long as it'has frictionalconl in proper position A rest on the roller, the latter is frictionally I In theacco npanying drawings, Figure l the roller being forced over the same. The

tact with the lower bearing, and the parts, are so designed that such frictional contact exists during all normal clearances of the bolster and is-disturbed only by abnormal clearances due to wrecks and the like. The

- inside and outside walls 6 and 7 of the housing are connected to the 16 in order to strengthen'the side walls or webs 6 and 7.

The bearing so far described is in the main-the same as my patent aforesaid, differing only in details, such as the sha )e of various types, to-wit, to limit the swiveling or swingin movementof the truck'and anable the sa ety chains to be dispensed with. Where a truck is derailed or runs into an open switch, it is liable to swivel under the ear tosuch a degree that it can no longer' roll .in the direction of movement of the car body, in which event there is danger of able safety chains to be dispensed with I the sharpest curves.

the forwardly moving car body tearing of the truck. To prevent excessive swiveling of trucks under car bodies safety chains connecj: the truck frame to the side sills of the car, which chains limit the swiveling movement of the trucks to that necessary to take The constant jangling of these chains is very objectionable. To enprovide the upper and lower bearings with coiiperating stops which permit the necessary swiveling to take curves, but come into play on abnormal swiveling. Since the blow is quite severe when abnormal swiveling is interrupted, it is necessary to provide strong abutments or stops at the ends of travel. Accordingly, in a bearing of the type shown, the substantially vertical end walls 8 and 9 have ,lleen provided to take the blow of the roller 10 at the ends of its travel, and the trunnions'of said roller are thereby relieved from such blows. Inconjunction therewith, the lower bearing 11 is provided at its ends with upwardly projecting stop'members in form 0 curved horns 19 and 9.0 respectively" which project upwardly slightly above the center. of the roller when the latter is in its most elevated position, the end walls 8 and 9 of the housing bein cut away at 21 to provide clearance for tie horns of the lower hearing. The upper ends of horns 19 and 20 are substantially vertical and hence prevent lower member is shown as secured to a member 22 projecting upwardly from the lower bolster,w hieh is indicated generally at 23, althougll'it may be formed integral with gear teeth by webs' the lower bearing tween the bolsters.

said member 22 if desired. For the purposes of strength, the member 11 is provided with a rib or flange 24.

On a straight track the parts assume the position shown in Fig. 4 with the roller 10 central with relation to both the housing/and 11. When the angular relation of the bolsters changes abnormally the roller 10 moves toward one end of the housing until it is stopped by the end wall 9. Thls change in the angular positions of the bolsters also brings the horns 20 of the lower bearing member against the roller, as shown in Fig. 3 so that said roller forms an abutment between the wall 9'and the horn 20 and prevents further angular change be- When the bolsters swing in the opposite direction abnormally, the roller 10 comes between. end'wall 8 and horn 19, preventing further change in the angular relation of the bolsters in that direction.

e parts are so designed that for all normal swinging of the bolsters, as when-passing around curves, the roller does not contact with either of the end walls 8 or 9 nor is it contacted by the horns 19 or 20 of the lower hearing, so that the normal function of the bearing is not interfered with. Should, however, the truck leave the track or run into an open switch the abnormal change in the angular relation, 2'. e. the abnormal swinging of the truck under the car, is prevented safety chains which are usually provided for this purpose. This bearing enables the safety chains to be disposed with.

The form of housing described prevents the roller from being inserted thereunto except through the bottom. To prevent the roller from drop ing out when the truck is taken from un er the car the side walls or webs 6 and 7 are turned flanges or ledges 26 which are in the path of the ends of the axle or journal bar 27 and prevent the roller from dropping out. This journal bar is a separate piece from the roller and extends througih an o enin therein which 0 enin r is so a: is

ciently large to permit the roller to have a certam amount of verticalmovement on said journal bar or axle while the latter is itself free'to move vertically in the housing and. permit the roller to move freely horizontally therein.

.One of the side walls or webs, such as the wall- 7, is provided withan opening SQthrough w ich the axle or journal bar can be inserted, but which opening axle naturally drops below the level of said opening and therefore cannot accidentally escape. lVith the construction described the roller can move vertically a distance equal to the space between the] flanges 26 and the journal bar and the difference in diameter of the opening in the roller and the journal in the same manner as by the is in such position that the journal bar or provided with inwardly bar itself. This gives a material amount of vertical movement to' the 'roller without extending the side walls or webs of the' housing downwardly unduly; .To' facilitate the removal of the. journal .bar or axle 27 the end thereof may be provided with a recess 28 to receive a suitable implement for lifting the same to remove it through the openin 29. If desired, the" opening 30 in the re ler may be so much larger than the axle or journal bar as to provide for the entire vertical movement of the roller. Fig.- 6 shows a modification in which this feature is practically realized, the opening 30in the roller bein -suiiiciently large to provide 1 for mostof the necessary vertical movement of the roller. In this case, the axle 27 extends through the lon slots 32 in the side, walls or webs of the iousings and is providedon its ends with nuts or the like and withwashers 34 to cover the slots. The slots, in width, are slightly greater than the diameter of the axle so as to provide for a portion of the'vertical movement of hearing itself is of simple construction and wannot easily break.

The bearing is shown with an incline frame or housing ill order to fit the tapering iorin of the bolsterand also to suit a conical roller, which is used to compensate for the are shaped path of the roller. This makes the bearing frictionless. A cylindri- ('al roller, however, might be used with fairly good results. The bearing is shown as provided with one roller, but this is not essential as the number may be increased it desired. l i

What l claim is:

l. A side bearing for railway cars conr prising a housing for the upper bolster provided with a bearing surface and with sub s intially vertical downwardly projecting end po1.'tions,'a freely traveling roller in said housing arranged to roll on said hearing surl'ace between said downwardly projecting end portions, means for preventing said roller from dropping out of said housing, and a cooperating bearing for the lower bolster provided with substantially vertical end portions projectingupwardly into the path of said roller, said lower bearing being plain from side to side whereby dirt can I u ranged toroll on sa1d bearin escape therefrom," the upwardly projecting endQportioris. of said lower bearing and the downwardly projectin end portions of the upper housing exten ing beyond the 'axis of the roller and one thereof-being recessed to permit the passagetherethrough or the other. v-

a 2. A side bearlng for railway cars comprising a housing-for the upper bolster provided with a-abearingsurfaceand with substantially vertical downwardly projecting end porti0ns,.a roller in said housing arsurface and being frceto travel horizontally therein'be tween the. end portions thereof, said housing being, movable vertically relative to said roller to suchan extent that the latter remains incontact with the lower bolster or hearing during normal clearances, means connecting said housing and roller and arranged to move the roller horizontally with all changes .in the angular relation of the bolsters,,means for preventing said roller from dropping out of said housing, and a cooperating bearing forthe lower bolster pro vided with substantially vertical end portions projecting upwardly into the path or. said roller and being plain from side to side whereby dirt can escape therefrom.

Aside bearing for railway cars comprising a housing for the upper bolster provided with a bearing surface and withsubstantially vertical downwardly; projecting end, portions, a roller in said housing arranged to roll on lsaid bearing surface' a11d being free to travel horizontally therein between the end portions thereof, said housing being movable vertically relative to said roller to such an extent that the latter re, mains in contact with the lower bolster during normal clearances, intermeshing teeth on said housing and roller to move the roller horizontallywith all changes in the angular relation of the bolsters, means arranged to prevent the rollerfrom dropping sufliciently u I I I to disengage said intcrmeshin'g teeth, and a cooperating bearing for the lower bolster provided with substantially vertical end portions projecting upwardly into the path of the roller and being plain from side to side whereby dirt can escape therefrom.

4. A side bearing for railway cars con-1- prising a housing for the upper bolster provided with a bearing surface and with substantiall y vertical downwardly projecting end portions and downwardly projecting side walls having horizontal ways, a roller in said housing arranged, to travel freely horizontally therein in contact with the bearing surface and between the end portions thereof, journal members projecting beyond the ends of said roller and over the ways on the housing and serving'to prevent 'said roller from dropping out of said housing, and a cooperating bearing for the lower stantially vertical downwardly projecting the bearing end portions and with downwardly projecting side walls having horizontal ways, a roller-,in said housing arranged to travel freely horizontally therein in contactwith portions thereof, said roller being provided with a large axial opening, a journal bar extending through the axial opening of said roller and projecting over the ways on the housing and'being of less diameter than said axial opening, thereby permitting said housing to have a vertical upand down movement relative to the roller but preventing the roller from dropping out of said housing, and a cooperating bearing for the lower bolster provided with. substantially vertical end portions path of said roller and being plain from side to side whereby dirt can escape therefrom.

)risin an inte ral frame or ho'usin for the 1 h b 5 upper bolster provided with a bearing sur-' surface and between the endprojecting upwardly into the side bearing for railway cars comopening in the side wall of the housing.

7. A side bearing for railway cars comprising a housing or frame for the upper bolster provided with a bearing surface and with side walls or webs provided with horizontal ways, a roller in said frame or housing arranged to travel on the bearing surface therein and provided with opening therethrough, a journal bar or ax of less size than the opening in the roller and extending therethroughand having its ends projecting over said horizontal ways, said parts being arranged to permit the roller to move vertically on said journal bar or axle, and means connecting said roller and housing and arranged to move said roller horizontally with all changes in the angular relation of the bolsters.

In testimony whereof, I have hereunto set my hand.-

ARNOLD STUGKI.

Witnesses:

JAs. L. WELDON, F. W. WINTER.

a large 

